18853592064 has 88 divisors (see below), whose sum is σ = 50417904768. Its totient is φ = 6263746560.

The previous prime is 18853592053. The next prime is 18853592071. The reversal of 18853592064 is 46029535881.

It is a junction number, because it is equal to n+sod(n) for n = 18853591998 and 18853592016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 933109 + ... + 953099.

It is an arithmetic number, because the mean of its divisors is an integer number (572930736).

Almost surely, 2^18853592064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18853592064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25208952384).

18853592064 is an abundant number, since it is smaller than the sum of its proper divisors (31564312704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18853592064 is a wasteful number, since it uses less digits than its factorization.

18853592064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20321 (or 20303 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 18853592064 in words is "eighteen billion, eight hundred fifty-three million, five hundred ninety-two thousand, sixty-four".